Product information
Overview
Key Features
- Digital input capacity: 32 digital inputs with an input characteristic curve in accordance with IEC 61131, type 1.
- Input voltage: DC input voltage with a rated value of 24 V; signal "0": -30 to +5 V, signal "1": 13 to 30V.
- Electrical isolation: Digital inputs are isolated from the backplane bus by an optocoupler; channels are not separated from one another and are arranged in groups of 16.
- Front connection: Required front connector: 40-pin.
- Signal wiring: Maximum cable length is 1 000 m for shielded cable and 600 m for unshielded cable.
- Product lifecycle: Product cancellation.
Technical Summary
| Product type | SIMATIC S7-300 SM 321 digital input module |
|---|---|
| Digital inputs | 32 |
| Input voltage | 24 V DC rated value |
| Signal "0" input range | -30 to +5 V |
| Signal "1" input range | 13 to 30V |
| Front connector | 40-pin |
| Electrical isolation | Between digital inputs and backplane bus; optocoupler |
Frequently Asked Questions
What is the exact Siemens model?
The exact model is Siemens 6ES7321-1BL00-0AA0, a SIMATIC S7-300 SM 321 digital input module.
How many digital inputs does this module have?
It has 32 digital inputs with a rated input voltage of 24 V DC.
Which front connector is required?
A 40-pin front connector is required.
Is the product available for a project quotation?
Send the required quantity, destination, and project-list context for a model-specific quotation request.
